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PRACTICE PAPER-1 Electrolysis, HCl, Acids bases and salts, Ammonia SECTION - I Answer All the following questions. Question- 1 a) State whether following statements are true or false. i) Ammonia mixes with hydrogen chloride gas to produce dense white fumes. ii) Chlorine turns moist starch iodide paper green. iii) Dry hydrogen chloride gas is acidic in nature. iv) Hydrogen chloride gas when dissolved in water produces hydrochloric acid. v) Reaction of silver nitrate with hydrochloric acid produces a yellow precipitate. b) Match the following. Eg: 6-(d). i) Sodium argentocyanide ii) Nitric acid iii) Acetic acid iv) Platinum v) Silver vi) Glucose ( ( ( ( ) ) ) ) a) Inert electrode b) Weak electrolyte. c) Strong electrolyte. d) Non electrolyte. ( ) e) Complex salt. ( ) f) Active electrode. c) Fill in the blanks. i) Hygroscopic substances are also called as___________. ii) Ammonium hydroxide is a ___________ base. iii) PH of pure water is________. iv) A compound other than CO2 which turns lime water milky__________. v) Addition of phenolphthalein (alkaline) to basic medium gives a___________colour. d) Complete the following table. Metallic salt solution 1) Copper sulphate 2) Iron(III)chloride 3)Iron(II)sulphate 4) Lead nitrate 5) Zinc nitrate Colour of ppt in little NH4OH e) Select the correct answer from the choices given below:1) The acid anhydride of sulphuricacid is a) Sulphurdioxide b) Sulphur trioxidec) Sulphur monochlorided) None of these. 2) In laboratory coppersulphate is prepared by a) Displacement b) Synthesis c)Direct combination d) Decomposition. 3)Nitrogen dioxide is a a) Greenish yellow coloured gas b) Colourless gas c) Reddish brown coloured gas d)Green coloured gas. 4)During the electrolysis of acidulated water the product at anode a) Hydrogen gas b) Nil c) Oxygen d) Both a and c. 5)Which of the following is an inert electrode. a) Iron b) Nickel c) Silver d)Copper. 6)Ammonia gets catalytically oxidized to a) N2 + H2O b) NO2 + H2O c) NO+ H2O d)Cu 7)Drying agent for ammonia. a) CaO b) P2O5 c) Conc H2SO4 d)HCl
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